According to the latest Bloomberg Billionaire’s Index calculations, his fortune is now worth $90 billion (79.4 billion euros), an increase of $15 billion since the begining of 2016 and up from less than $60 billion in 2012.

The Microsoft co-founder’s current net worth is the equivalent of 0.5 percent of the entire US gross national product.

The second wealthiest individual is Spain’s Amancio Ortega, the 80-year-old founder of clothing chain Inditex, the parent company of Zara. His worth is calculated at $75.4 billion (66.5 billion euros).